Arrays, Repeated Addition, and Multiplication
Fill in the blank
Word Problems with Variables
Ratio Tables
True or Not?
100
Use repeated addition or multiplication to solve for the total number of lemons in the box
4 + 4 + 4 + 4 + 4 = 20
5 x 4 = 20
100
5 x 3 = ____
15
100
Wally cleaned 5 window panes. Then he cleaned 9 more window panes. What equation could I write, using a variable, to show the total number of panes cleaned? What is the total number of panes cleaned?
5 + 9 = p
p = 14
100
if 1 car has 4 wheels, how many wheels do 3 cars have? Write an equation to solve
3 x 4 = 12 wheels
100
True or false?
(4 x 4) = (4 x 2) + (4 x 2)
True
(4 x 4) = 16
(4 x 2) = 8
8 + 8 = 16
200
What is the total number of squares in this array? Write a repeated addition or multiplication equation to solve
24
3 x 8 or 8 + 8 + 8
200
4 x ___ = 16
4
200
Wally cleaned a window that had 4 rows of windowpanes with 9 panes in each row. What equation could I write, including a variable, that shows the total number of panes Wally washed? What is the total number of panes Wally washed?
4 x 9 = p
p = 36
200
if 1 spider has 8 legs, how many legs does 4 spiders have?
4 x 8 = 32 legs
200
Grace says the total cost of the stamps is 30 cents. Is she correct? If not, what is the correct amount?
She is not correct; the total is 40 cents
8 x 5 = 40
5 + 5 + 5 + 5 + 5 + 5 + 5 + 5 = 40
300
If 3 x 5 = 15, then what does 5 x 5 = ?
How do you know?
5 x 5 is 2 more groups of 5, so 5 x 5 is 15 + 10, which is 25
300
5 x 2 = ___ x 5
2
300
Wally's son Wendell is cleaning windows with Wally. For each day that Wendell helps Wally, he earns $3. He helps Wally for 7 days. How much money does he earn. What is an equation using a variable you could write to solve for the total?
$3 x 7 = d
d = 21 dollars
300
If 1 tricycle has 3 wheels, how many wheels do 9 tricycles have?
9 x 3 = 27 wheels
300
True or false? I can use 2 x 8 to help me figure out 4 x 8
True - if I know 2 x 8, I can double 2 x 8 to get the answer to 4 x 8
2 x 8 = 16
4 x 8 = 32
400
Write two equations that combine to equal the total amount of squares in the array where the line divides
(2 x 5) + (2 x 5) = (4 x 5)
(4 x 5) = 20
400
6 x 3 = 9 x ___
2
400
Toby's class has 20 students. His teacher wants to split the class into 5 groups. How many students would be in each group? What equation(s) could you use to solve the problem?
a. 20 + 5 = a
b. 20 ÷ 5 = a
c. a x 5 = 20
d. 20 - 5 = a
20 ÷ 5 = a , or a x 5 = 20
a = 4
400
If 1 hand has 5 fingers, how many fingers do 5 hands have?
5 x 5 = 25 fingers
400
True or false?
8 x 4 = (2 x 4) + (4 x 4)
False
8 x 4 = 32
2 x 4 = 8
4 x 4 = 16
16 + 8 = 24, not 32